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A “suspen-dome” structural system consisting of a thin-walled dome and a tensegric system is described, and an overview and results of vibration tests on a full-sized structure are given. The tests revealed the vibration characteristics of the suspen-dome. Close agreement between analytical results based on design information and the test results confirms that the design method used is appropriate. Effectiveness of the suspen-dome against earthquake motions, particularly vertical motions, was confirmed through elastic earthquake response analysis.

Pendulum is one of the basic methods of seismic isolation. In this paper, full-scale tests using a floor isolated by a pendulum system, model tests of paddle isolators, and analytical studies on pendulum isolators applied in high-rise buildings and space structures were described. Isolating device with long period such as 4 second may be realized in a relatively simple way if pendulum isolators are used. Also clarified was that when pendulum isolators are adopted in space structures, they would reduce vertical response induced by input horizontal load quite efficiently.

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